CHEMISTRY COMMUNITY

Sofia Q

Can someone list all the topics we should be extremely familiarized with for our final?

Sofia Q

How can a lewis structure help us identify bases and acids?

Sofia Q

Although our final is accumulative, is it good to assume it will showcase more heavily the subjects we have recently been looking at?

Sofia Q

What is a an oxoacid?

Sofia Q

How does the resulting anion being stable relate to the strength of the acid?

Sofia Q

What is the relationship between bond of A---H regarding the strength of the acid?

Sofia Q

From what section must we complete homework problems for?

Sofia Q

What makes an acid either strong or weak?

Sofia Q

What are the rules for naming the coordination compounds?

Sofia Q

What constitutes a coordination sphere?

Sofia Q

Could someone explain what an ligand is?

Sofia Q

Lewis structures should be mainly used to determine the shape in VSPER, and from that shape you can determine polarity more accurately.

Sofia Q

You would just be asked to predict the melting point, nothing exact but more on the lines of high and low, or perhaps comparing two molecules and predicting which one would have a higher or lower melting point due to the bonds they have.

Sofia Q

He said during lecture on Friday that he would be going over sigma and pi bonds on Monday. :)

Sofia Q

Bond angle measurements have to be done experimentally but certain angles you can tell right away by seeing the lewis structure, such as those of a linear molecule or trigonal planar.

Sofia Q

VSPER is the acronym for Valence Shell Electron Pair Repulsion, a model that explains the experimentally observed shape of a molecule.

Sofia Q

Are we still doing homework for chemical bonds ?

Sofia Q

It would be considered unreasonable.

Sofia Q

If all of them can't be 0, then you want them to be the smallest they can be, agreeing with any charge the compound hay have. A tip would be to keep the central 0 is possible, however.

Sofia Q

At most you will be given the differences and you will have to subtract those, but I doubt we personally have to find the electronegativity.

Sofia Q

by looking at the periodic table one would assume nitrogen to be less electronegative than oxygen following the trend on the periodic table, but that in fact due to the symmetry that the nitrogen atom has in the 2p subshell(compared to that of oxygen), more clearly seen in a arrow diagram, gives it ...

Sofia Q

Hi guys, as I do homework problems in preparation for the midterm I can't help to notice that some of them require equations that we did not practice with, or in some cases, not mention at all... Will we be expected to use them still? Or should we mainly focus on the application of equations that Dr...

Sofia Q

There is an a cut out rule that says what compounds in between these ranges are, experimenting with the compound would be needed. A type of test we talked about in class is solubility in water. Salts, another term for ionic compounds, will completely dissolve in water, but as the covalent character ...

Sofia Q

Additionally, the lack of the octet will make BF3 highly reactive, turning to BF4^- as a fluorine atom is attracted.

Sofia Q

It was mentioned during one of the chemistry reviews that these configuration exceptions are favorable due to the symmetry that is created within them.

Sofia Q

A larger anion will create a larger distorted electron cloud that in turn allows for more covalent character.

Sofia Q

Hi! I thought that maybe it can be helpful to see it visually. Considering that valence electrons are those found within the s and p subshells added together. A noble gas such as neon ([He] 2s2 2p6) has both their s and p orbitals filled, meaning 2 + 6= 8. This makes it stable and have a low electro...

Sofia Q

In class we said how elements P, S, and Cl can have exceptions to the octet rule, but I was wondering if any other elements could too, or should I just keep these three in mind?

Sofia Q

When setting up Lewis structures, should we always ensure that the formal charge of our central atom is 0? Are there any exceptions?

Sofia Q

Would it be expected of us to know or know how to calculate observed bond lengths?

Sofia Q

A compound can only called covalent if it does not contain any metals? Or can someone provide an example of a covalent compound that contains a metal?

Sofia Q

Friday in class we talked about how the bond lengths were different in Benzene depending on whether there was a single or double bond between two carbons, do these lengths apply only to bonds or carbon, or are they universally what double or single bond lengths are for any atoms of any element?

Sofia Q

Just to be sure, this week we do start doing homework purely from the problems annotated in "Chemical Bonds" correct?

Sofia Q

What results from the position of inner and outer e-?

Sofia Q

Why do the e- in the same subshell occupy different orbitals with parallel spin?

Sofia Q

Hi,
Could someone explain to me how many subshells there would be if n=4?

Sofia Q

Should we focus entirely on quantum world for our upcoming midterm?

Sofia Q

Hi guys, I was wondering if we should continue doing homework from the problems listed under Quantum World, or if there are other sections we should start working on?

Sofia Q

What is the wavelength of an electron?

Sofia Q

During what years where the QM equations developed?

Sofia Q

What happens during constructive interference?

Sofia Q

I read somewhere we can derive Planck's constant from plotted data that demonstrated the directly proportional relationship of energy and frequency, is it true?

Sofia Q

Can someone please tell me the masses of an electron, proton, and neutron?

Sofia Q

I was attempting to do problem G5 and I got a bit confused when it came to transferring volumes of solution to obtain a certain number of mmols, could someone explain?

Sofia Q

I'm not quite sure but it would make more sense to pick 5 problems from the new Quantum section.

Sofia Q

Technically while the stoichiometric coefficients follow the same ratio, whatever number they are multiplied by will remain a correct answer, but generally this would not be helpful, and the smallest ratio is preferred. Try to simplify it down as much as you can while remaining with whole numbers.

Sofia Q

Remember the law of conservation of mass while balancing the equation, your number of atoms should be present in the reactants side of the equation should match those in the product side. If yours match like that then you know that you balanced it with the correct coefficients.

Sofia Q

Calculations should be done in the power of 10 to avoid any misunderstandings. For example, if in a problem regarding molarity, the formula calls for the number of moles over liters, however, if you were to be given mL and not convert it before inserting, without future modification your calculated ...

Sofia Q

Hi! Phosphorus trioxide and phosphorus apart from pentoxide having different chemical formulas, respectively P4O6 and P4O10, the roman numerals refer to the different oxidation states that each phosphorus has in their respective molecule.

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